MedTrace Logo

Productivity Study of Presbyopia Improvement in Textile Workers

NCT04172935 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 136

Last updated 2019-12-11

No results posted yet for this study

Summary

To establish, using a randomized, controlled design, the impact of near vision correction on the productivity of presbyopic textile workers in China, as measured by the change of monthly income.

Conditions

Interventions

DEVICE

Presbyopic Glasses/ Intervention Group

Immediate provision of a free pair of spherical presbyopic glasses to correct the worker's vision for optimal picking distance, astigmatism is corrected.

Sponsors & Collaborators

  • Zhongshan Ophthalmic Center, Sun Yat-sen University

    lead OTHER

Principal Investigators

  • Yangfa Zeng, Master · Zhongshan Ophthalmic Center, Sun Yat-sen University

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-12-13
Primary Completion
2019-12-21
Completion
2049-12-31

Countries

  • China

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04172935 on ClinicalTrials.gov